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Tall cucumber plants are great when they grow nicely, but we should take nothing for granted. They can die on you very easily and I'm happy if 2/3 of them survive through the summer.

This is my advice for keeping them productive right through the summer, and until early October, in this climate. Over the years, I've had many die on me unexpectedly for different reasons, and I share how to reduce that.

I'm growing organically with no feeds of fertiliser, and this slightly reduces output. On the other hand it increases the health of plants, and gives cucumbers of great flavour.

I use biological predators against red spider mite, phytoseiulus from Gardening Naturally https://gardening-naturally.com/products/phytoseiulus?_pos=1&_psq=red+spider&_psid=9ad4aa480&_ss=e

More on growing cucumbers in my book No Dig: https://charlesdowding.co.uk/products/no-dig-nurture-your-soil-to-grow-better-veg-with-less-effort?variant=49029405442371

In this video, How to Grow Cucumbers: https://youtu.be/vp3PgXlSEN0

And this digital growing guide: https://charlesdowding.co.uk/products/cucumber-cordon-ridge-growing-guide?variant=49139109560643

Filmed 14th August 2026 by Carly Dutton-Edwards

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00:00 Introduction - options for growing
00:20 Timing of planting, and temperature challenges
01:53 Harvesting cordon cucumbers - options
02:50 Deformed cucumber
03:14 Removing lower leaves, and mosaic virus
04:39 Pruning
05:30 Compost addition
06:08 Watering, and reducing stem length
07:23 Harvesting - productivity and removing weak fruits
08:53 No need for fertiliser with no dig, more on compost
09:29 Outro - ridge cucumber option
Transcript
00:00Cucumbers are almost magical. I find them truly amazing how they grow and the many
00:06ways you can grow them. This is just one way that you can also grow them outside on the ground.
00:12It's
00:13actually much easier. You don't have to prune them or anything or take any side shoots out
00:18and just wait for the cucumbers to develop. Then the biggest tip I would give you for that is
00:23don't plant them too early. Cucumbers love warmth. And that's one reason I've got them in here.
00:31Polytunnel. This is Southwest England zone eight, but the summers are not normally hot.
00:36Our average summer temperatures are 70s. This year we've been in the 90s quite a few times.
00:42That's low 30 centigrade. Oh boy, it's been challenging for cucumbers because we planted
00:48these on the 18th of May and it was cold and they had fleece over. They don't like that.
00:53And then within 10 days, it had turned incredibly hot, like 34 degrees centigrade, 93 Fahrenheit.
00:59And here it was close to 40 centigrade, over 100. Flipping out. And I was dousing them with a little
01:05bit of new water every day in the middle of the day, as well as in the morning, just to
01:11stop the
01:11growing points frazzling in incredible heat and sunshine. Because at that time when they're young,
01:17the root system has not fully developed and they're wanting to grow fast, but they can't keep
01:23up with the sun and the warmth and the roots can't supply them with enough moisture. That's just a
01:29fade back in the early summer. Now we've got through that. They've got a strong root system
01:34and they're well established. Every so often I'm losing a leader. And again, it's to do with,
01:39you know, even now mid August, we're having crazy temperatures as well. But I can show you a few
01:43things that I've learned along the way, even since the last video we filmed about how to grow cucumbers.
01:48It's on my channel. We'll put a link in the description. It's got more detail about it.
01:53This is a few extra things I've learned since then, like picking them, pruning them.
02:01You can see here's a beautiful cucumber. You can pick these. These are cordon cucumbers or English
02:07cucumbers. They grow vertically up a string, which is buried in the planting hole and just tied loosely
02:14at the top. And as they grow, I'm growing these for sale. So I want, I want cucumbers that look
02:22pretty much perfect. Slight blemish there, but this one will pass because it's such a good size.
02:28So I'm harvesting them at this stage, but you don't have to let them get that big. You know,
02:34you could harvest at that stage if you want. It's how you like them, really. But you will get more
02:41to eat if you let them get a bit bigger. But don't feel there's any particular size or stage you
02:45have
02:45to aim for. I am because I'm selling, that's all. And actually one like this, I'm going to cut it
02:54off
02:55probably to compost. So if I didn't have enough cucumbers to eat, I would eat that. But do you see
02:59how it's slightly deformed? And believe it or not, most customers don't like that. So sadly,
03:06like I say, that's edible, but there's only so many you can eat. Well, I might, I'll put it in
03:11my
03:11picking bucket and give it away. And then after this picking, I'm taking off some lower leaves
03:19and I'm doing it by using my thumbnail quite a bit, twisting, cutting with my nail, but not with a
03:26knife.
03:28And the reason for that is cucumbers get a virus called cucumber mosaic virus.
03:34And I think using my knife on several cucumbers consecutively around, there were 35 plants here,
03:41it's spreading the virus. I think, you know, I'm kind of guessing a bit, but doing it this way,
03:47you know, often then wiping my fingers and that. I don't think it's spreading it so much because last
03:52year from the 36 plants I put in, only eight survived by the end of June. The virus spread
04:00really fast. It ravaged most of the plants. This year in late May, I started to see it,
04:07slightly mottled leaves on two or three plants up there. I took out two of them straight away,
04:13thought I'll just keep the third one in and keep an eye on it. It didn't improve. So that one
04:17also
04:17I took out and I've been doing this way of pruning the leaves and 25 out of 36 plants have
04:25survived.
04:25And the ones that haven't is mostly to do with heat, incredible heat. So this is a success for me.
04:33And that's why I want to share with you some of these tips. In terms of twisting them around,
04:40it's just a gentle, fairly firm rotation around the string. And something else I do at the top is
04:49remove every second cucumber. So there's a gap there. You've got one there. Also, I'll leave that
04:58one, but remove the side shoot. And then here I'm going to take out or remove the tendril. So you
05:04can
05:04see that cucumber I'm removing together with its side shoot, because there's only so many of these
05:12amazing large cucumbers that a plant can support and leaving all of them on means the plant will
05:20give you a fantastic harvest, followed by none at all for about two foot length, 60 centimeter of stem,
05:28because it's kind of recovering. And I'm growing these organically. I'm not using any feed or fertilizer
05:33at all. All these had was the initial dose of compost in late April, which was actually quite a bit
05:39of
05:39well-rotted horse manure. That's really good. Any kind of well-rotted organic matter. And that's long-term
05:45soil food, but it's not rapid. It's not like junk food, fast food, which is what fertilizer is really
05:51in soil. So you haven't got an endless store of a rapid supply of nutrients, which for these to crop
05:59on every node would be what they would need. I don't want to go there because I'm getting fantastic
06:03results without that, as long as I don't ask too much of the plants. And then here's one more idea.
06:09This plant did recently lose its leader. It got frazzled in some heat. It's related to how much
06:18water I'm giving. I'm using this automatic watering system spray line, and it's not even. And some of
06:23the plants are getting a bit less moisture and that is causing them to suffer. But here, this one has
06:30got its last cucumber now. And then I'm going to reduce the stem length because there's still time,
06:38mid-August for it to grow some more. So if I cut it here, that's now the main stem at
06:47the top,
06:47which I've cut off. This one can come out. It's very tightly wrapped.
06:57I was hoping a side shoot or sucker would appear higher up, but it hasn't. It's there. So that can
07:07be
07:07the new leader all being well. I treat them very gently at first or they snap off the main stem.
07:13And there's quite a few here, actually, where that has happened. I can't see one right at the moment,
07:17but it's a constant vigilance with these plants. They are somewhat fragile, but they're also
07:27incredibly productive. And here's another one ready to harvest.
07:32Yeah. This morning, there are eight cucumbers here ready to harvest from the 26 plants. And
07:37yesterday I picked about six to give you an idea. Here also is one that's not going to make it.
07:46And
07:46I think that's to do with the feeding that I mentioned that the plant can't get quite enough
07:51food to always grow the cucumbers I was hoping for. So I'm taking that one out. That's compost.
07:59Whereas this one looks good. That's nice, even shape and strong. And it's looking further up here.
08:09Yeah, maybe I can't see an example. Sometimes you see ones that are looking a bit yellow,
08:16even when they're young. And those also I removed because the plant has already thought,
08:20no, I can't make that into a nice cucumber. So it's kind of constant vigilance getting, you know,
08:26getting really close to your plant. Actually, there's an example, that little cucumber there.
08:31Do you see how measly it is and going yellow compared to the one above it,
08:37which looks so strong with a nice flower on. So that one will make a nice cucumber. This one
08:42definitely won't. And this is what I was saying about, you know, they can't do it all the time on
08:48every node. But, you know, have a play, work things out, see what's working for you.
08:54I do recommend not using fertilizer, no dig. You build up a really strong soil biology,
09:00which is what helps the plants to feed. And one job less, no feeding or fertilizing,
09:05just a good dose, you know, up to two inches. But in this case, it was about one inch, three
09:11centimeters,
09:12of really well decomposed, high quality horse manure compost, and also some homemade compost we put
09:17on a bit. And on the pathways here, I'm putting a little bit of any old compost, not wood chip,
09:24green waste compost, in fact, because also the plants are rooting into the pathways as well.
09:29So have fun with cucumbers and try ridge cucumbers outside if you haven't got a structure like this,
09:37but, you know, they are such a versatile plant.
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